60aa307741
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3694 212acab6-be3b-0410-9dea-997c60f758d6
124 lines
2.7 KiB
C++
124 lines
2.7 KiB
C++
#ifndef __MMAP_H_
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#define __MMAP_H_
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#include "Platform.h"
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#include "growbuf.h"
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class IMMap
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{
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public:
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virtual void resize(int newlen)=0;
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virtual int getsize() const=0;
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virtual void *get(int offset, int size) const=0;
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virtual void *get(int offset, int *size) const=0;
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virtual void *getmore(int offset, int *size) const=0;
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virtual void release()=0;
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virtual void release(void *view, int size)=0;
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virtual void clear()=0;
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virtual void setro(BOOL bRO)=0;
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virtual void flush(int num)=0;
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virtual ~IMMap() {}
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};
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class MMapFile : public IMMap
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{
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private: // don't copy instances
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MMapFile(const MMapFile&);
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void operator=(const MMapFile&);
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public:
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MMapFile();
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virtual ~MMapFile();
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void clear();
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void setro(BOOL bRO);
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#ifdef _WIN32
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int setfile(HANDLE hFile, DWORD dwSize);
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#else
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int setfile(int hFile, DWORD dwSize);
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#endif
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void resize(int newsize);
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int getsize() const;
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void *get(int offset, int size) const;
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void *get(int offset, int *sizep) const;
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void *getmore(int offset, int *size) const;
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void release();
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void release(void *pView, int size);
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void flush(int num);
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private:
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#ifdef _WIN32
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HANDLE m_hFile, m_hFileMap;
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#else
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FILE *m_hFile;
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int m_hFileDesc;
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int m_iMappedSize;
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#endif
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void *m_pView;
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int m_iSize;
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BOOL m_bReadOnly;
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BOOL m_bTempHandle;
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static int m_iAllocationGranularity;
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};
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class MMapFake : public IMMap
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{
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private: // don't copy instances
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MMapFake(const MMapFake&);
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void operator=(const MMapFake&);
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public:
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MMapFake();
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void set(const char *pMem, int iSize);
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int getsize() const;
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void *get(int offset, int size) const;
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void *get(int offset, int *size) const;
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void *getmore(int offset, int *size) const;
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void resize(int n);
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void release();
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void release(void *p, int size);
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void clear();
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void setro(BOOL b);
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void flush(BOOL b);
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private:
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const char *m_pMem;
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int m_iSize;
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};
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class MMapBuf : public IGrowBuf, public IMMap
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{
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private: // don't copy instances
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MMapBuf(const MMapBuf&);
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void operator=(const MMapBuf&);
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public:
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MMapBuf();
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virtual ~MMapBuf();
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int add(const void *data, int len);
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void setro(BOOL bRO);
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void resize(int newlen);
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int getsize() const;
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int getlen() const;
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void *get() const;
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void *get(int offset, int *sizep) const;
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void *get(int offset, int size) const;
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void *getmore(int offset, int *size) const;
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void release();
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void release(void *pView, int size);
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void clear();
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void flush(int num);
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private:
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GrowBuf m_gb;
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MMapFile m_fm;
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int m_gb_u;
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int m_alloc, m_used;
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};
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#endif//__MMAP_H_
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